Stream is undoubtedly essential for the river ecosystem. It is the source of water for the river as well as the groundwater. At the same time, it is essential to study the macroinvertebrates to know their role on the food web. But how it is beneficiary to humans or what is the social impact of this kind of study?
Macroinvertebrates can be good bioindicators for water quality and general status of the food web. Toxicity, be it natural or manmade, can quickly affect aquatic larvae as well as adults in certain species, causing a domino effect over both their prey and predators, and on humans as well. Understanding how the ecosystem works and how it reacts to any anomaly is crucial for the detection of unusual behaviors that could pose a bigger danger
Aquatic macroinvertebrates good general water quality indicators. Several books have been written to classify aquatic insects as to their tolerance to pollutants. Water quality sampling and testing requires more attention to timing, lab methods, and much greater costs through time. However water quality tests are typically required for drinking water, which can address some specifics that aquatic organisms are not sensitive to or to be used for reliable drinking water safety checks. Water quality of surface waters can change quickly, adding to water quality uncertainties such as from stormflow, point and non-point pollutants, etc. Classified aquatic insects in Their specific types (often species are needed), and numbers or abundance are present through time periods that can be suggestive or interpreted as to flow permanence, past pollution or other deleterious conditions, and general assessment of aquatic health. To get a picture of the full diversity, sample of various substrates, facets (riffles, pools, glides, runs, pocket water habitats) may be needed. As with the Researchgate report I uploaded on the Spruce Budworm treatment project in Oregon, aquatic insects can be indicators of quality control of insecticide treatment in protecting streams, or assessing the extent and recovery from chemical spills.
Chemical parameters show the condition at the moment. In running water, it requires frequent measurements or mixed tests to get an overview of time. Macroinvertebrates respond to long-term conditions, and can, for example, be knocked out by an acute discharge, which is not captured by chemical sampling. In addition, biological indices require relatively little equipment and resources.
Aquatic macroinvertebrates good general water quality indicators also,Chemical and physical parameters show the water quality at the moment.
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